{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-36016",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-36016"
  ],
  "published": "2024-05-29T18:48:10Z",
  "summary": "tty: n_gsm: fix possible out-of-bounds in gsm0_receive()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: n_gsm: fix possible out-of-bounds in gsm0_receive()\n\nAssuming the following:\n- side A configures the n_gsm in basic option mode\n- side B sends the header of a basic option mode frame with data length 1\n- side A switches to advanced option mode\n- side B sends 2 data bytes which exceeds gsm->len\n  Reason: gsm->len is not used in advanced option mode.\n- side A switches to basic option mode\n- side B keeps sending until gsm0_receive() writes past gsm->buf\n  Reason: Neither gsm->state nor gsm->len have been reset after\n  reconfiguration.\n\nFix this by changing gsm->count to gsm->len comparison from equal to less\nthan. Also add upper limit checks against the constant MAX_MRU in\ngsm0_receive() and gsm1_receive() to harden against memory corruption of\ngsm->len and gsm->mru.\n\nAll other checks remain as we still need to limit the data according to the\nuser configuration and actual payload size.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.93",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-36016"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9513d4148950b05bc99fa7314dc883cc0e1605e5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b229bc6c6ea9fe459fc3fa94fd0a27a2f32aca56"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0fb736c9931e02dbc7d9a75044c8e1c039e50f04"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4c267110fc110390704cc065edb9817fdd10ff54"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/46f52c89a7e7d2691b97a9728e4591d071ca8abc"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/774d83b008eccb1c48c14dc5486e7aa255731350"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f126ce7305fe88f49cdabc6db4168b9318898ea3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b890d45aaf02b564e6cae2d2a590f9649330857d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/47388e807f85948eefc403a8a5fdc5b406a65d5a"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T11:52:36Z"
  }
}